2AL9B-MZX019Bluetooth Headphone

[Shenzhen Shenglai Technology Co., Ltd] [Room 3110, Block C, Xintian Century Business Centre, Fuming Road, Futian, Shenzhen]] [China] Date: [2024.3.26] Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: [2AL9B-MZX019] FRN: [0026557025] US Agent – Attestation Statement / Part 2.911(d)(7) [Shenzhen Shenglai Technology Co., Ltd] certifies, that as of [2024.3.26], we have designated Sakar International , Inc to accept ser vice of process on our behalf for FCC ID: [2AL9B-MZX019]. [Shenzhen Shenglai Technology Co., Ltd], accepts to maintain an agent of service of process in the United States for no less than one year after her the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proeitceeding involving the equipment, whichever is later. Sakar International , Inc, accepts as of the date o f the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of [Shenzhen Shenglai Technology Co., Ltd] for FCC ID:[ 2AL9B-MZX019]. Designated Agent Information: Company Name: Sakar Interna�onal , Inc FRN: 0028102671 Address: 195 Carter Drive Edison, Edison,NJ 8817 United States Contact Person: DAWN LEITAO Phone: （800）637-1090 Email:[email protected] Sincerely, Company: [Shenzhen Shenglai Technology Co., Ltd] Designated Agent: [Sakar Interna�onal , Inc] Company Representative: [Leo Guo] Designated Agent Representative: [DAWN LEITAO] Signature: Signature: Shenzhen Shenglai Technology Co., Ltd

Rev1/26/2023 (ShenzhenShenglaiTechnologyCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:03-27-2024 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID：2AL9B-MZX019 [ShenzhenShenglaiTechnologyCo.,Ltd](“theapplicant”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuanttosection2.903oftheFCCrules. Sincerely, (Applicantsignature) (LeoGuo) Rev1/26/2023 (ShenzhenShenglaiTechnologyCo.,Ltd) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:03-27-2024 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID：2AL9B-MZX019 [ShenzhenShenglaiTechnologyCo.,Ltd](“theapplicant”)certifiesthat,asofthedateofthefilingofthe application,theapplicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofits subsidiariesoraffiliates)asanentityproducing“covered” equipment. Sincerely, (Applicantsignature) (LeoGuo)

ShenzhenShenglaiTechnologyCo.,Ltd Rev11/20/07 FederalCommunicationsCommission AuthorizationandEvaluationDivision ConfidentialityRequestregardingapplicationforcertificationofFCCID:2AL9B-MZX019 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestconfidential treatmentofinformationaccompanyingthisapplicationasoutlinedbelow: ExhibitTypeFileName BlockDiagram Schematics OperationalDescription BlockDiagram Schematics OperationalDescription Theabovematerialscontaintradesecretsandproprietaryinformationnotcustomarilyreleasedto thepublic.Thepublicdisclosureofthesematerialsmaybeharmfultotheapplicantandprovide unjustifiedbenefitstoitscompetitors. TheapplicantunderstandsthatpursuanttoSection0.457oftheRules,disclosureofthis applicationandallaccompanyingdocumentationwillnotbemadebeforethedateoftheGrant forthisapplication. PursuanttoDA04-1705June15,2004oftheCommission’spublicnotice,Wealsorequestingthe commissiontograntshort-termconfidentialityrequestonthefollowingattachmentsuntil180 daysaftertheGrantDateofEquipmentAuthorizations. ExhibitTypeFileName Sincerely, LeoGuo 2024.03.27

Declarationonmodeldifference Wetheundersignedherebyconfirmthatthesemodelsareidentical,andallmodelshavethesame RFmodule,PCBlayout,Antenna,schematicsandcomponent.Onlydifferentonmodelnameand thecoloroftheproduct. ProductionnameTrademarkFCCModelno. BluetoothHeadphoneAlteclansing2AL9B-MZX019MZX019,MZX019-BLK, MZX019-MSIL Confirmedby: LeoGuo ShenzhenShenglaiTechnologyCo.,Ltd 2024.03.27

ShenzhenShenglaiTechnologyCo.,Ltd FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:2024.03.27 SUBJECT:FCCID:2AL9B-MZX019 ToWhomItMayConcern: I,theundersigned,herebystatesthisequipmenthasbeentestedandfoundtocomply withthelimitsforaClassBdigitaldevice,pursuanttopart15oftheFCCRules,and willapplytheSupplier'sDeclarationofConformityproceduretotheclassB computerperipheralportionofthiscompositedevice.IunderstandthefollowingFCC requirements: 1.DevicessubjecttotheSDoCprocedurearerequiredtobetestedtoshow compliancewiththeFCCtechnicalregulationsbyarecognizedaccreditedtesting laboratory.ThetestinglaboratorymustbeaccreditedbyaCommissionapproved accreditationbodyordesignatedunderthetermsofagovernment-to-government MutualRecognitionAgreement(MRA).Alistingofthoseaccreditedtesting laboratoriesthathavebeenrecognizedbytheCommissionispublishedontheFCC Webpage:https://apps.fcc.gov/oetcf/eas/reports/TestFirmSearch.cfm(Selectthe "accredited"optiontosearchforFCCrecognizedaccreditedtestfirms.) 2.Pt2.1077containsthelistofinformationthatmustbeincludedintheSupplier's DeclarationofConformity,whichmustbesuppliedwitheachproductsold.The SDoCcomplianceinfoshallbeincludedintheUser’sManualorasaseparate sheet.Theinfomustcontainthename,address,andphonenumberofthe responsibleparty,whichmustbelocatedwithintheUnitedStates.Accordingto 2.909(b),theresponsiblepartyiseithertheManufactureroriftheproductis importedtheImporter. Regards, ShenzhenShenglaiTechnologyCo.,Ltd ------------------------------- （LeoGuo）

ShenzhenShenglaiTechnologyCo.,Ltd FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Date:2024.03.27 SUBJECT:FCCApplicationforFCCID:2AL9B-MZX019 ToWhomItMayConcern: We,theundersigned,herebyauthorizeSamLv.atEMTEK(DONGGUAN)CO.,LTD.on ourbehalf,toapplytotheFederalCommunicationsCommissiononourequipment.Any andallactscarriedoutbyEMTEK(DONGGUAN)CO.,LTD.onourbehalfshallhave thesameeffectasactsofourown. ThisistoadvisethatweareinfullcompliancewiththeAnti-DrugAbuseAct.We,the applicant,arenotsubjecttoadenialoffederalbenefitspursuanttoSection5301ofthe Anti-DrugActof1988,21USC853a,andnopartytotheapplicationissubjecttoadenial offederalbenefitspursuanttothatsection. Regards, Sincerely, LeoGuo 2024.03.27

ReportNo.EDG2403040254E001Page1of3Ver.1.0 FCCID:2AL9B-MZX019 ReportNo.EDG2403040254E001Page2of3Ver.1.0 ReportNo.EDG2403040254E001Page3of3Ver.1.0

ITEM#:MZX019 DC input: 5V,0.5A FCC ID: 2AL9B-MZX019 MID#3890324 Made in China ITEM#:MZX019 DC input: 5V,0.5A FCC ID: 2AL9B-MZX019 MID#3890324 Made in China

ReportNo.EDG2403040254E001Page1of2Ver.1.0 FCCID:2AL9B-MZX019 B T A N T ReportNo.EDG2403040254E001Page2of2Ver.1.0

ReportNo.EDG2403040254E00102RPage1of7Ver.1.0 TESTREPORT ProductName：BluetoothHeadphone ModelNumber：MZX019,MZX019-BLK,MZX019-MSIL FCCID：2AL9B-MZX019 Preparedfor:ShenzhenShenglaiTechnologyCo.,Ltd Address:Room3110,BlockC,XintianCenturyBusinessCentre, FumingRoad,FutianDistrict,Shenzhen,China Preparedby:EMTEK(DONGGUAN)CO.,LTD. Address:-1&2/F.,Building2,ZoneA,ZhongdaMarineBiotechnology ResearchandDevelopmentBase,No.9,XinchengAvenue, SongshanhuHigh-technologyIndustrialDevelopmentZone, Dongguan,Guangdong,China TEL:+86-0769-22807078 FAX:+86-0769-22807079 ReportNumber:EDG2403040254E00102R Date(s)ofTests:March04,2024toMarch26,2024 Dateofissue:March26,2024 $二维码$ ReportNo.EDG2403040254E00102RPage2of7Ver.1.0 TableofContents 1.TESTRESULTCERTIFICATION...............................................................................................................................................3 2.EUTSPECIFICATION.................................................................................................................................................................5 3.TESTREQUIREMENT................................................................................................................................................................6 4.MEASUREMENTRESULT.........................................................................................................................................................6 ReportNo.EDG2403040254E00102RPage3of7Ver.1.0 1.TESTRESULTCERTIFICATION Applicant:ShenzhenShenglaiTechnologyCo.,Ltd Address: Room3110,BlockC,XintianCenturyBusinessCentre,FumingRoad,Futian District,Shenzhen,China Manufacturer:GuangdongShenglaiTechnologyCo.,Limited Address: ZhongtaiIndustrialZone,HengshanVillage,GuraoTown,ChaoyangArea, ShantouCity,GuangdongProvince,China EUT:BluetoothHeadphone ModelName:MZX019,MZX019-BLK,MZX019-MSIL Trademark:Alteclansing MeasurementProcedureUsed: APPLICABLESTANDARDS STANDARDTESTRESULT §15.247(i),§2.1093 PASS TheaboveequipmentwastestedbyEMTEK(DONGGUAN)CO.,LTD.Thetestdata,dataevaluation,test procedures,andequipmentconfigurationsshowninthisreportweremadeinaccordancewiththeprocedures giveninANSIC63.10(2013)andtheenergyemittedbythesampleEUTtestedasdescribedinthisreportisin compliancewiththerequirementsofFCCRulesFCC§15.247(i),§2.1093. Thetestresultsofthisreportrelateonlytothetestedsampleidentifiedinthisreport DateofTest:March04,2024toMarch26,2024 Preparedby: WarrenDeng/Editor Reviewer: TimDong/Supervisor Approve&AuthorizedSigner: SamLv/Manager ReportNo.EDG2403040254E00102RPage4of7Ver.1.0 ModifiedHistory VersionReportNo.RevisionDateSummary EDG2403040254E00102R/OriginalReport ReportNo.EDG2403040254E00102RPage5of7Ver.1.0 2. EUTSpecification CharacteristicsDescription Product:BluetoothHeadphone ModelNumber: MZX019,MZX019-BLK,MZX019-MSILThesemodelarethesameexpectthe modelnameandappearance,HereselectMZX019fortest. Sample:1# DataRate: 1MbpsforGFSKmodulation 2Mbpsforπ/4-DQPSKmodulation 3Mbpsfor8DPSKmodulation Modulation: GFSK,π/4-DQPSK,8DPSK OperatingFrequency Range(s): 2402-2480MHz NumberofChannels: 79channels TransmitPowerMax: -2.95dBm(0.000507W) AntennaGain:0dBi Powersupply: DC5VfromUSB DC3.7Vfrombattery Evaluationapplied:MPEEvaluation SAREvaluation ReportNo.EDG2403040254E00102RPage6of7Ver.1.0 3. TestRequirement SAREvaluation Accordingto447498D01V06,systemsoperatingundertheprovisionsofthissectionshallbeoperatedina mannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergylevelinexcessofthe Commission’sguidelines. RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,usingmeasurementsorcomputer simulation.WhenroutineSARevaluationisnotrequired,portabletransmitterswithoutputpowergreaterthan theapplicablelowthresholdrequireSARevaluationtoqualityforTCBapproval. OneantennaisavailablefortheEUT.Theminimumseparationdistanceis5mm. ReportNo.EDG2403040254E00102RPage7of7Ver.1.0 4. MeasurementResult Antennagain:0dBi Transmit Frequency( MHz) Mode Measured Power (dBm) E.I.R.P(d Bm) Tune upPower (dBm) Maxtuneup power(dBm) Calculation Result 1-g SAR 2402GFSK-3.71-3.71 -4±1-3 0.15535193 2441GFSK-3.57-3.57-4±1-30.15660803 2480GFSK-4.63-4.63-5±1-40.12538803 2402Π/4-DQPSK-3.22-3.22-4±1-30.15535193 2441Π/4-DQPSK-3.32-3.32-4±1-30.15660803 2480Π/4-DQPSK-4.12-4.12-5±1-40.12538803 24028DPSK-2.97-2.97-3±1-20.19557643 24418DPSK-2.95-2.95-3±1-20.19715783 24808DPSK-3.92-3.92-4±1-30.15785413 AccordingtoKDB447498D01V06,nostand-alonerequiredforBTantenna,andnosimultaneousSAR measurementisrequired. ***EndofReport***

Antenna Specification antenna model nameSL833 Manufacturer: Shenzhen Zhongke Lanxun Technology Co., Ltd. Address: Room 1301-1, Building A, Wisdom Plaza, No.4068 Qiaoxiang Road, Gaofa Community, Shahe Street, Nanshan District, Shenzhen Electrical Properties Frequency 2.400-2.48MHz Impedance 50 0hm Nominal V.S.W.R Return Loss Radiation Omni-directional Gain (Peak) 0dBi Cable Loss 3.2 dB / m Max @ 2480 MHz Polarization Linear, Vertical Admitted Power Connector Physical Properties Antenna Material copper foil Cable TypeO.D. 5.0mm // L= 28mm Operating Temp.-10 ~ +60 ̊C Storage Temp.-10 ~ +70 ̊C Cable Color 电 性 测 试 报 告 Silver white Test Reports 10dB Min S 参 数 测 试 S Parameter Test HP 8753E 增益测试 Gain Test Antenna Radiation Pattern VS Gain 0 45 90 135 180 225 270 315 -5 -5 -15 -15 -25 -25 -35 -35-45

ReportNo.EDG2403040254E00101RPage1of72Ver.1.0 TESTREPORT ProductName：BluetoothHeadphone ModelNumber：MZX019,MZX019-BLK,MZX019-MSIL FCCID：2AL9B-MZX019 Preparedfor:ShenzhenShenglaiTechnologyCo.,Ltd Address:Room3110,BlockC,XintianCenturyBusinessCentre, FumingRoad,FutianDistrict,Shenzhen,China Preparedby:EMTEK(DONGGUAN)CO.,LTD. Address:-1&2/F.,Building2,ZoneA,ZhongdaMarineBiotechnology ResearchandDevelopmentBase,No.9,XinchengAvenue, SongshanhuHigh-technologyIndustrialDevelopmentZone, Dongguan,Guangdong,China TEL:+86-0769-22807078 FAX:+86-0769-22807079 ReportNumber:EDG2403040254E00101R Date(s)ofTests:March04,2024toMarch26,2024 Dateofissue:March26,2024 $二维码$ ReportNo.EDG2403040254E00101RPage2of72Ver.1.0 TableofContents 1TESTRESULTCERTIFICATION..................................................................................................................................................3 2EUTTECHNICALDESCRIPTION.................................................................................................................................................5 3SUMMARYOFTESTRESULT.....................................................................................................................................................6 4TESTMETHODOLOGY.................................................................................................................................................................7 4.1GENERALDESCRIPTIONOFAPPLIEDSTANDARDS......................................................................................................7 4.2MEASUREMENTEQUIPMENTUSED..................................................................................................................................7 4.3DESCRIPTIONOFTESTMODES..........................................................................................................................................8 5FACILITIESANDACCREDITATIONS........................................................................................................................................9 5.1FACILITIES..............................................................................................................................................................................9 5.2EQUIPMENT............................................................................................................................................................................9 5.3LABORATORYACCREDITATIONSANDLISTINGS.........................................................................................................9 6TESTSYSTEMUNCERTAINTY.................................................................................................................................................10 7SETUPOFEQUIPMENTUNDERTEST.....................................................................................................................................11 7.1RADIOFREQUENCYTESTSETUP1.................................................................................................................................11 7.2RADIOFREQUENCYTESTSETUP2.................................................................................................................................11 7.3CONDUCTEDEMISSIONTESTSETUP.............................................................................................................................13 7.4BLOCKDIAGRAMCONFIGURATIONOFTESTSYSTEM.............................................................................................14 7.5SUPPORTEQUIPMENT........................................................................................................................................................14 8FREQUENCYHOPPINGSYSTEMREQUIREMENTS...............................................................................................................15 8.1StandardApplicable.................................................................................................................................................................15 8.2EUTPseudorandomFrequencyHoppingSequence................................................................................................................15 8.3EqualHoppingFrequencyUse................................................................................................................................................16 8.4FrequencyHoppingSystem.....................................................................................................................................................16 9TESTREQUIREMENTS...............................................................................................................................................................17 9.120DB&99%BANDWIDTH.....................................................................................................................................................17 9.2CARRIERFREQUENCYSEPARATION..............................................................................................................................29 9.3NUMBEROFHOPPINGFREQUENCIES............................................................................................................................32 9.4AVERAGETIMEOFOCCUPANCY(DWELLTIME)........................................................................................................35 9.5MAXIMUMPEAKCONDUCTEDOUTPUTPOWER.........................................................................................................41 9.6CONDUCTEDSUPRIOUSEMISSION.................................................................................................................................48 9.7RADIATEDSPURIOUSEMISSION.....................................................................................................................................58 9.8CONDUCTEDEMISSIONTEST...........................................................................................................................................67 9.9ANTENNAAPPLICATION.............…

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ReportNo.EDG2403040254E001Page1of2Ver.1.0 FCCID:2AL9B-MZX019 ReportNo.EDG2403040254E001Page2of2Ver.1.0